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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 1 |
| 4 | -71 |
| 5 | -19 |
| 6 | 10051 |
| 7 | 12349 |
| 8 | -3185391 |
| 9 | -9346247 |
| 10 | 1797304771 |
| 11 | 9717361721 |
| 12 | -1582301193527 |
| 13 | -13722004186331 |
| 14 | 2000705907453891 |
| 15 | 25552516703201461 |
| 16 | -3432004488804778079 |
| 17 | -60960914621687232271 |
| 18 | 7660860906885122096515 |
[1,1,3,1,-71,-19,10051,12349,-3185391,-9346247, 1797304771,9717361721,-1582301193527, -13722004186331,2000705907453891, 25552516703201461,-3432004488804778079, -60960914621687232271,7660860906885122096515] |